beginner-stocking
10 Gallon Fish Tank Stocking Guide: Nano Species, Bioload & Care
Evidence-based 10-gallon stocking guidance covering true nano species, single centerpiece options, and invertebrates, with bioload and spatial guidance.
PEER-REVIEWED AQUATIC SCIENCE
Aquarium Care Tools & Species Guides
Explore aquarium calculators, fish health guidance, and aquatic species profiles for everyday aquarium decisions.
✓ No Ads or Paywalls
✓ Emerson 1975 Model
✓ Instant Offline Logic
INSTANT TANK CALIBRATOR
LIVE ENGINE
20 Gallons (76 Liters)
🔄 Filter Flow (GPH):
120 GPH (454 L/h)
🔥 Heating Power Target:
100 Watts
🐟 Bioload Safe Ceiling:
~18–22 community fish (plants uptake NO3)
40+
Calculation Tools
Emerson TAN & pKa equilibrium 148
Aquatic Species Profiles
Taxonomic & territorial layers
100% Free
Ad-Free Utility Core
Zero paywalls or gated formulas
Peer-Reviewed
Veterinary Protocols
DOI literature citations & dosagesPROVEN DIAGNOSTIC STANDARDS · HIGH VELOCITY ENGINES
💧 Dilution Engine
Water Change & Nitrate Dilution
Calculate exact gallons to remove and nitrate ppm drops using logarithmic dilution mathematics.
📊 PPM Protocol
Safe Nitrate Levels in Aquariums
Biological thresholds for planted tanks (15–30 ppm), shrimp (<10 ppm), and community fish.
📐 Volume & Weight
Tank Dimensions to Gallons & Load
Convert dimensions into exact liquid gallons, liters, substrate displacement, and floor weight.
🌿 Species Guide
Best Hard-Water Aquarium Fish
High GH/KH species: Guppies, Mollies, African Cichlids, Rainbowfish, and mineral osmotic care.
Aquarium Emergency Rescue Desk
View All 12 Diseases → Acute Aquarium Triage & Critical Care
Are your fish in immediate danger? Select primary acute symptom for instant chemical & quarantine protocols.
⚡ High-Priority Emergency Symptoms (Hover for Immediate Lifesaving Action): Swipe to view →
📋 Extended Disease Protocols (6 Symptoms):
Symptom Protozoan
White Spots / Salt Grains
Ich (White Spot Disease) — Ichthyophthirius multifiliis.
Protocol: 86°F Heat / Malachite Green →
Symptom Bacterial
Frayed / Rotting Fins
Fin & Tail Rot — Pseudomonas / Aeromonas necrosis.
Protocol: Aquarium Salt / Antibacterials →
Symptom Organ Failure
Bloated / Pineconing Scales
Dropsy (Ascites) — Internal systemic osmotic fluid retention.
Protocol: Epsom Salt Bath / Kanamycin →
Symptom Chemical Shock
Gasping at Surface / Red Gills
Ammonia / Nitrite Toxicity or Severe Water Hypoxia.
Protocol: 50% Water Change + Aeration →
Symptom Dinoflagellate
Velvet Gold Dust / Rust Sheen
Velvet Disease — Piscinoodinium pillulare dinoflagellate.
Protocol: Tank Blackout + Copper / Salt →
Symptom Bacterial
Cotton Tufts / Saddleback Lesion
Columnaris — Flavobacterium columnare virulent strain.
⚠️ Heat is contraindicated: elevated temperature directly accelerates F. columnare replication rate. Keep water strictly below 75°F (24°C); do NOT use the Ich heat protocol if Columnaris is suspected.
Protocol: Lower Temp (<75°F) + Furan-2 →
Flagship Engineering Suite
Browse All 40+ Calculators → Essential Aquarium Calculators
Instant access to peer-reviewed calculation engines. Filter 40+ calculators by chemistry, filtration, medication, or bioload.
🧪
Water Chemistry Free Ammonia (NH3) Toxicity
Calculates toxic un-ionized NH3 fraction via thermodynamic pKa equilibrium to prevent gill necrosis.
Inputs: TAN (ppm), pH, Temp (°F/°C) Open →
⚗️
Water Chemistry Nitrite Toxicity & Salt Shield
Models methemoglobinemia risk and exact chloride ion dosing required to block gill absorption.
Inputs: NO2 (ppm), Chloride, Volume Open →
💧
Water Chemistry Water Changes & Dilution Kinetics
Exponential dilution kinetics to calculate target nitrate reduction without osmotic stress.
Inputs: Current NO3, Target NO3, Volume Open →
📐
Tank Sizing & Filtration True Aquarium Water Volume
Computes net usable internal liquid volume after substrate, glass, and hardscape displacement.
Inputs: L × W × H (in/cm), Glass Thickness Open →
🔄
Tank Sizing & Filtration Filter Turnover & GPH Flow
Calculates hourly turnover targets (4x to 10x) based on tank bioload and filtration media type.
Inputs: Tank Volume, Bioload, Filter Type Open →
🔥
Tank Sizing & Filtration Aquarium Heater Sizing & Redundancy
Determines thermal wattage targets and dual redundant fail-safe configurations by ambient delta-T.
Inputs: Gallons, Room Temp, Target Temp Open →
🧂
Medication & Dosing Aquarium Salt Dosing Calculator
Therapeutic osmotic salt concentrations for external parasite eradication and gill relief.
Inputs: Volume, Target Salinity (ppt/%) Open →
🐟
Stocking & Bioload Aquarium Fish Stocking Calculator
Calibrates dynamic metabolic bioload, swimming territory layers, and oxygen consumption.
Inputs: Tank Size, Filter Flow, Species Count Open →
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Thermodynamic Equilibrium Simulator
Ammonia (NH3) & Water Safety Gauge
Standard aquarium test kits measure Total Ammonia Nitrogen (TAN = NH3 + NH4+). Only un-ionized NH3 is biologically toxic. Adjust the sliders below to see how pH and temperature trigger lethal toxicity in real-time.
1.00 ppm
0.0 ppm (Zero) 2.5 ppm 5.0 ppm (Extreme)
7.60
6.5 (Acidic) 7.5 (Neutral) 8.6 (Alkaline African/Marine)
78°F (25.6°C)
68°F (Coldwater) 78°F (Tropical) 86°F (Discus/High Heat)
Calculated Free Toxic Ammonia (NH3)
0.024 ppm
CAUTION: Moderate Toxicity
Safe (<0.02) Caution (0.02-0.05) Lethal (>0.05)
Sub-lethal physiological stress. Causes gill hyperplasia and increased disease susceptibility. Perform a 25% water change.
Launch Full Emerson Formula Calculator →
Species Encyclopedia
View All 148 Aquatic Species Profiles → Aquatic Species Profiles
Comprehensive care parameters, minimum tank volumes, scientific classifications, and direct bioload calculators for fish and invertebrate species.
15 Gal
Beginner
5 Gal
Beginner
30 Gal
Intermediate
10 Gal
Beginner
30 Gal
Intermediate
10 Gal
Beginner
20 Gal
Beginner
20 Gal
Beginner
Knowledge Base
Browse all articles →
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